Abstract: Copolymerizates of methyl methacrylate and butyl methacrylate are used as plastisols in the automotive sector and as floor coverings. The invention describes a way to increase the storage stability of the plastisols by using small amounts of cross-linking agents.

Abstract: This invention relates to a tire having a tread of a rubber composition which contains a low molecular weight polyester plasticizer.

Abstract: The use of isosorbide esters, isosorbide polyesters, isosorbide ethers, isosorbide carbonates, isosorbide thioethers, isosorbide thioesters, isosorbide amides, isosorbide (thio)urethanes, isosorbide urea, isosorbide phosphates and isosorbide phosphonates as a plasticizer is described. Instead of isosorbide it is also possible for corresponding diols such as isomannide and similar compounds, in which the ring oxygen atoms of the isosorbide have been replaced by carbon or by other heteroatoms, to serve as a base. In particular, this relates to C3-C11 alkanoates of isosorbide, isomannide and the like. In particular, the compounds are used as a plasticizer inpoly(vinylchloride), optionally in conjunction with usual plasticizers such as dioctyl phthalates.

Abstract: A processable rubber stock is produced by the preparation of a silica-filled, vulcanized elastomeric compound comprising mixing an elastomer with an amorphous silica filler, a processing aid comprising fatty acid ester of a polyol, optionally an additional mineral filler, and a cure agent. The elastomer is preferably a diene monomer homopolymer or a copolymer of at least one diene and at least one monovinyl aromatic monomer. By effecting vulcanization, a vulcanized elastomeric compound is produced containing good physical properties for use as tread stock for a pneumatic tire.

Abstract: A processable rubber stock is produced by the preparation of a silica-filled, vulcanized elastomeric compound comprising mixing an elastomer with an amorphous silica filler, a processing aid comprising fatty acid ester of a polyol, optionally an additional mineral filler, and a cure agent. The elastomer is preferably a diene monomer homopolymer or a copolymer of at least one diene and at least one monovinyl aromatic monomer. By effecting vulcanization, a vulcanized elastomeric compound is produced containing good physical properties for use as tread stock for a pneumatic tire.

Abstract: This invention relates to a coated substrate comprising (i) a substrate and (ii) a coating thereupon comprising a polymeric composition formed from (a) twenty-five to ninety-nine parts by weight of a poly(amide-imide) prepolymer; (b) one to twenty-five parts by weight of a trifunctional ester selected from the group consisting of trifunctional methacrylate ester, trifunctional acrylate ester, and mixtures thereof; (c) from 0.5 to fifteen parts by weight of an organo-reactive silane consisting of an amino group containing alkoxysilane having the formula NH2(CH2)nSi(OC2H5)3 where n is an integer from one to twenty; and (d) a conductive additive.

Abstract: A polycarbonate molding composition containing a UV absorber and two types of mold release agents is disclosed. The composition is suitable for use as coating or external layer on coextruded sheets.

Abstract: A plasticizer ester prepared from the catalytic reaction of (1) at least one branched C7-C11 oxo alcohol prepared from C6-C10 olefins via hydroformylation and having at least 50% methyl branching at the beta carbon, and (2) at least one acid or anhydride.

Abstract: Provided are a thermoplastic resin composition comprising a polycarbonate resin, and its injection moldings. The composition has good moldability, and its injection moldings have the advantages of high impact resistance, good mechanical strength, and good mold releasability. The composition is well moldable into thin-walled and complicated moldings through injection molding, and the productivity of the moldings is high. The composition comprises 100 parts by weight of a resin mixture of (A) from 30 to 99% by weight of a polycarbonate resin and (B) from 1 to 70% by weight of a styrenic resin, and from 0.1 to 5 parts by weight of (C) an ester of pentaerythritol and a saturated aliphatic carboxylic acid. The composition preferably contains a flame retardant, especially a halogen-free phosphate, still having good moldability, and its injection moldings have the advantages of safety, flame retardancy, high impact resistance and good mechanical strength.

Abstract: Provided are a thermoplastic resin composition comprising a polycarbonate resin, and its injection moldings. The composition has good moldability, and its injection moldings have the advantages of high impact resistance, good mechanical strength, and good mold releasability. The composition is well moldable into thin-walled and complicated moldings through injection molding, and the productivity of the moldings is high. The composition comprises 100 parts by weight of a resin mixture of (A) from 30 to 99% by weight of a polycarbonate resin and (B) from 1 to 70% by weight of a styrenic resin, and from 0.1 to 5 parts by weight of (C) an ester of pentaerythritol and a saturated aliphatic carboxylic acid. The composition preferably contains a flame retardant, especially a halogen-free phosphate, still having good moldability, and its injection moldings have the advantages of safety, flame retardancy, high impact resistance and good mechanical strength.

Abstract: The present invention relates to a thermoplastic resin composition characterized by comprising (A) a thermoplastic resin, (B) an inorganic filler and/or organic filler, and (C) a polyhydroxy alcohol ester of condensed hydroxyfatty acid and/or (C′) a condensed hydroxyfatty acid having a degree of condensation exceeding 3.

Abstract: A silica-filled, vulcanized elastomeric compound comprises 100 parts by weight of an elastomer; from about 5 to about 100 parts by weight of a reinforcing filler per 100 parts of elastomer, wherein the reinforcing fillers are selected from the group consisting of carbon black and silica filler; from 0 to about 20 percent by weight of a silane, based upon the weight of the silica filler; a cure agent; from about 0 to about 20 parts by weight of a processing aid selected from the group consisting of fatty acid esters of hydrogenated and non-hydrogenated C5 and C6 sugars; from about 0 to about 20 parts by weight of a processing aid selected from the group consisting of polyoxyethylene derivatives of fatty acid esters of hydrogenated and non-hydrogenated C5 and C6 sugars; from about 0 to about 40 parts by weight of an additional filler other than silica or carbon black, with the provisos that at least one of the processing aids or additional fillers are present; that if the processing aid is sorbitan monooleate,

Abstract: Provided are a flame-retardant polycarbonate resin composition containing a phosphate compound as the flame retardant, and also injection moldings of the composition. The composition has good moldability, and its moldings have good phosphate mold-deposits resistance and good mold releasability. In particular, when containing a styrenic resin, the composition has much better melt fluidity, and its moldings have improved impact resistance and flame retardancy. The composition comprises 100 parts by weight of a resin or resin mixture of (A) from 20 to 100% by weight of a polycarbonate resin and (B) from 0 to 80% by weight of a styrenic resin, from 1 to 30 parts by weight of (C) a phosphate compound having a melting point of not lower than 70° C., and from 0.1 to 10 parts by weight of (D) at least one member selected from the group consisting of polyglycerins, polyalkylene glycols, esters of polyglycerins, esters of polyalkylene glycols and polyesters of polycarboxylic acids with polyalcohols.

Abstract: The present invention is directed to a method for reducing waste accumulation by using an environmentally degradable disposable material. The disposable material, which includes a hydroxycarboxylic acid-containing polymer, degrades hydrolytically during operative and disposal stages in a controlled manner such that the disposal degradation rate of the material is accelerated relative to the operative degradation rate of the material.

Abstract: An addition-curable silicone rubber composition comprising (A) an organopolysiloxane containing in one molecule at least two alkenyl groups bonded to silicon atoms, (B) an organohydrogenpolysiloxane containing in one molecule at least two hydrogen atoms bonded to silicon atoms, (C) a platinum catalyst and (D) a (meth)acrylate compound having a melting point of 40° C. or above. This composition has both a good storage stability and a rapid-curing performance in a well balanced state, and hence has a high workability and contributes to an improvement in productivity.

Abstract: A processable rubber stock is produced by the preparation of a silica-filled, vulcanized elastomeric compound comprising mixing an elastomer with an amorphous silica filler, a processing aid comprising fatty acid ester of a polyol, optionally an additional mineral filler, and a cure agent. The elastomer is preferably a diene monomer homopolymer or a copolymer of at least one diene and at least one monovinyl aromatic monomer. By effecting vulcanization, a vulcanized elastomeric compound is produced containing good physical properties for use as tread stock for a pneumatic tire.

Abstract: A composition suitable for slush molding comprising a thermoplastic polyurethane elastomer (A) having a number average molecular weight of 10,000 to 50,000 and a heat softening initiation temperature of 120 to 200° C., a plasticizer (B), a compound (C) containing a radical polymerizable unsaturated group, and optionally an additive. The composition provides a molded article excellent in durability such as thermal/light aging resistance, soft touch at low temperature, and appearance.

Abstract: A lactic acid polymer composition comprising formulating 100 parts by weight of a mixture consisting of 80-95% by weight of an L-lactic acid polymer having an L-lactic acid proportion of 75% or more and 5-20% by weight of a plasticizer selected from the group consisting of a polyhydric alcohol ester and a hydroxypolycarboxylic acid ester, 0.1-5 parts by weight of an anti-blocking agent having a SiO.sub.2 content of 90% or more and an average particle size of 7-50 nm, and 0.1-2 parts by weight of a slip agent; a molded product and film obtained from the composition; and a preparation process of the same are disclosed. The molded product and film are excellent in processability, transparency, flexibility, anti-blocking property and slip, and can be degraded into harmless water and carbon dioxide under natural environment, when abandoned.

Abstract: A solubilizing agent and a compound made by reacting selected nucleophiles, including fatty acid reactants and amines with an isocyanate are disclosed. The addition of the isocyanate and the different nucleophiles will create a di-urethane tetra-amide solubilizing agent product. The polyamide-solubilizing agent is useful as an ingredient in a phase change solid imaging material and as carrier compositions used to make phase change ink jet inks.

Abstract: The present invention relates to a high clarity water sensitive carboxylated nitrile rubber composition which is particularly useful in making photopolymer formulations for printing plates utilized in flexographic printing applications. The present invention more specifically discloses a high clarity water sensitive carboxylated nitrile rubber composition which is comprised of (a) a carboxylated nitrile rubber which is comprised of repeat units which are derived from about 30 weight percent to about 60 weight percent 1,3-butadiene, from about 30 weight percent to about 50 weight percent acrylonitrile, and from about 10 weight percent to about 20 weight percent methacrylic acid, and (b) from about 1 to about 10 phr of at least one organic acid which contains at least three carboxyl groups. The carboxylated nitrile rubber of this invention will typically have a Mooney ML-4 viscosity of less than about 80.

Abstract: Disclosed are polymeric plasticizers of the formula (1)R.sup.a --C(O)--(O--G--OC(O)--(CH.sub.2).sub.4-12 --C(O)).sub.1-12 --O--G--O--C(O)--R.sup.b (1)wherein R.sup.a and R.sup.b are each C.sub.2 -C.sub.22 straight saturated alkyl groups, and wherein each G group is 1,2-propanediyl or 2-methylpropane-1,3-diyl such that both types of G groups are present in a ratio to each other of 3:1 to 1:3.

Abstract: The present invention relates to a high clarity water-sensitive carboxylated nitrile rubber composition which is particularly useful in making photopolymer formulations for printing plates utilized in flexographic printing applications. The present invention more specifically discloses a high clarity water-sensitive carboxylated nitrile rubber composition which is comprised of (a) a carboxylated nitrile rubber which is comprised of repeat units which are derived from about 33 weight percent to about 77 weight percent 1,3-butadiene, from about 15 weight percent to about 45 weight percent acrylonitrile and from about 8 weight percent to about 22 weight percent methacrylic acid and (b) from about 1 to about 10 phr of at least one organic acid which contains at least three carboxyl groups. The carboxylated nitrile rubber of this invention will typically have a Mooney ML-4 viscosity of less than about 80 and a volume swell of greater than 40 percent.

Abstract: Thermoplastic molding compositions compriseA) from 5 to 99% by weight of a thermoplastic polymer selected from the group consisting of polyamides, polyesters, polyphenylene ethers and mixtures of these,B) from 1 to 60% by weight of red phosphorus which has been pretreated with from 0.01 to 2% by weight, based on 100% by weight of B), of a phlegmatizer and from 2 to 15% by weight of a mineral filler,C) from 0 to 70% by weight of other additives and processing aids,where the sum of the percentages by weight of components A) to C) is 100%.

Abstract: A coating composition based on a dispersed fluoropolymer resin is provided. The composition includes a vinylidene difluoride-based polymer such as PVDF, an organic solvent and a dispersant. A method of forming a protective coating on a metal substrate with the fluoropolymer resin-based coating composition and a composite material having at least one surface coated with a vinylidene difluoride-based polymer film are also provided.

Abstract: A gasketing compound with low plasticizer migration comprises a polyvinyl chloride resin with an inherent viscosity at or above about 0.92 and a porosity at or above 24 cubic centimeters per gram, and a polymeric plasticizer. The gasketing compound is extruded to form a gasket which produces little or no marring of the paint surface with which the gasket is in contact.

Abstract: The present invention relates to a high clarity water sensitive carboxylated nitrile rubber composition which is particularly useful in making photopolymer formulations for printing plates utilized in flexographic printing applications. The present invention more specifically discloses a high clarity water sensitive carboxylated nitrile rubber composition which is comprised of (a) a carboxylated nitrile rubber which is comprised of repeat units which are derived from about 30 weight percent to about 60 weight percent 1,3-butadiene, from about 30 weight percent to about 50 weight percent acrylonitrile, and from about 10 weight percent to about 20 weight percent methacrylic acid, and (b) from about 1 to about 10 phr of at least one organic acid which contains at least three carboxyl groups. The carboxylated nitrile rubber of this invention will typically have a Mooney ML-4 viscosity of less than about 80.

Abstract: A thermoplastic resin composition which comprises (A) a thermoplastic polyester resin such as polybutylene terephthalate, (B) a rubber-modified styrenic resin such as an ABS resin, (C) an olefinic copolymer composed of (c-1) an olefinic polymer fragment and (c-2) a vinyl-series polymer fragment and (D) a branched ester obtainable from a C.sub.16-30 fatty acid and/or alcohol having at least one branched chain, and which may contain (E) an inorganic filler, (F) a flame-retardant, (G) an inorganic flame-retardant auxiliary and so on. This resin composition has improved friction/abrasion characteristics with maintaining its high mechanical characteristics, and is useful for providing a moulded article including a sliding member.

Abstract: A secondary stabilizer for emulsion polymers is disclosed. The secondary stabilizer is a polyester containing diol residues, residues of olefinically unsaturated dicarboxylic acids which carry sulfonate groups and residues of dicarboxylic acids which do not contain olefinic unsaturation or sulfonate groups. The residues of the olefinically unsaturated dicarboxylic acids comprise from 70 mole-% to 99 mole-% of dicarboxylic acid residues in the polyester and from 1 mole-% to 30 mole-% of residues of dicarboxylic acids which do not contain olefinic unsaturation or sulfonate groups. The polyester secondary stabilizer is not a surfactant (does not significantly lower the surface tension of water) and in addition is biodegradable.

Abstract: Molding compositions comprising a thermoplastic, at least one lubricant and at least one fibrous material have high abrasion resistance and high rigidity. The molding compositions comprise, for example, polyoxymethylene, ultrahigh-molecular-weight polyethylene as lubricant and glass fibers. The molding compositions are used for the production of gearwheels, toothed racks, bearings and chains.

Abstract: A low wear polymeric composition exhibiting improved surface wear resistance and coefficients of friction characterized as a melt blend of a thermoplastic polymer and a lubricating system containing PTFE, pentaerythritol tetrastearate and fine particle, stearate coated calcium carbonate, a hindered amine, N,N'-ethylene bis-stearamide, and calcium ricinoleate. The composition is suitable for the preparation of shaped articles for use in fricitional environments.

Abstract: The mold release performance of pentaerythritol esters is enhanced in polycarbonate resin moldings by partial replacement with an ester of dipentaerythritol.

Abstract: Aqueous oil-in-water emulsion scratch cover compositions for covering scratches, blemishes and other damage to finished wooden articles such as furniture, wooden trim and wooden floors with characteristics comparable to volatile organic solvent-based scratch cover compositions are described which are substantially free of added volatile organic solvents and conventional surfactants. These emulsion compositions comprise 2-10% of an animal, vegetable or mineral oil that is a liquid and substantially nonvolatile at 25.degree. C., 0.0001-1% of at least one organic solvent soluble dye that is soluble in the oil and is substantially water insoluble, an effective amount, preferably 0.01-5%, of a polymeric electrostatic emulsifier such as an acrylates/C.sub.10 -C.sub.30 alkyl acrylate cross polymer that takes the place of conventional surfactants with the balance comprising water, and optionally, non-ionic waxes, nonionic nonvolatile silicone fluids, pigments or no more than about 1% of nonionic surfactants.

Abstract: A polysilane composition including a polysilane and a plasticizer can be coated as a thin film having improved mechanical strength and a high photo decomposition rate. A polysilane composition including a polysilane and an ester can be coated as a thin film which is exposed to UV and readily dyed to form a dyed polysilane film.

Abstract: Distortion control additives are disclosed which comprise a polyisocyanate, a polyol or polyol blend having a hydroxyl functionality of 2 to 3 hydroxyl groups per molecule and an average molecular weight of at least about 500 grams per gram mole, a diol chain extender having from about 2 to 35 carbon atoms per molecule and an acrylate or methacrylate having an acrylate functionality of from 1 to 5 acrylate groups per molecule. Ultraviolet-curable liquid compositions comprising an unsaturated polymeric resin, a monomer and the distortion control additives of the present invention are also disclosed. The distortion control additives can provide substantial reductions in distortion, e.g., shrinkage, of objects produced by ultraviolet curing, eg., stereolithography.

Abstract: There is disclosed a polyacetal resin composition that has excellent slidability and abrasion resistance and makes it possible to propose molded parts free of problems such as abrasion and noises such as squeaking caused by abrasion even when used under high load and high sliding speed conditions even when the material of the partner sliding parts is any type of plastic or metal. The resin includes from 0.5 to 15 parts by weight of olefinic elastomer, from 0.1 to 5.0 parts by weight of fatty acid ester having at least 12 carbon atoms, and, if necessary, from 0.05 to 5.0 parts by weight of polytetrafluoroethylene micropowder per 100 parts by weight of polyacetal resin.

Abstract: Compositions of water insoluble U.V. absorbers can be improved by the addition of a non-ionic surfactant which is an addition product of ethylene oxide or propylene oxide or both ethylene oxide and propylene oxide, and a mixture of fatty alcohols, fatty acids or fatty esters having 7-20 carbon atoms, preferably 14-18 carbon atoms or either tristyrylphenol or distyrylphenol. Such compositions have a good storage stability and excellent shear stability when the substrate to be dyed is a yarn which is in packed form.

Abstract: The thermoplastic resin composition of the present invention comprises (A) polyamide having a melting point of not lower than 280.degree. C., particularly preferably (A-1) specific polyamide having a melting point of higher than 300.degree. C., (B) a specific modified polymer, (C) a hindered phenol type antioxidant having a molecular weight of not less than 500 and a TGA 10% weight loss temperature of not lower than 300.degree. C., and (D) a sulfur type antioxidant having a molecular weight of not less than 600 and a TGA 10% weight loss temperature of not lower than 280.degree. C. The molded product of the present invention is made of the above-mentioned thermoplastic resin composition. The thermoplastic resin composition of the invention is excellent in heat stability.

Abstract: Absorbable coating and absorbable blend of polycaprolactone and crystallization modifier especially suitable for use in the coating of surgical sutures and in the controlled release of chemical or pharmaceutical agents.

Abstract: A process for the preparation of a stable water-in-oil emulsion of a hydrolyzed polymer of an N-vinyl amide of the formula ##STR1## in which R and R.sup.1 denote H or C.sub.1 -C.sub.6 alkyl, by the polymerization of a compound of the formula I alone or in admixture with another ethylenically unsaturated monomer in the presence of a polymerization initiator and emulsifier in the form of a water-in-oil emulsion, to form a water-in-oil polymeric emulsion, followed by hydrolysis of the polymer in the form of the water-in-oil polymeric emulsion in the presence of an acid or base and from 1 to 30 wt %, based on the polymer, of an emulsifier, the emulsifier used being a mixture of(a) from 5 to 95 wt % of a block or graft copolymer of the structure (A-B)m, (A)-B or (B)-A, in which in each case(a) from 5 to 95 wt % of a block or graft copolymer of the structure (A-B).sub.m, (A).sub.n B or (B).sub.

Abstract: Flameproofed thermoplastic molding materials containA) a thermoplastic polyester,B) decabromodiphenylethane,C) a metal oxide or metal sulfide or metal borate or a mixture thereof,D) an ester of at least one alcohol having at least 3 OH groups and one or more aliphatic mono- or dichaboxylic acids of 5 to 34 carbon atoms and optionally,E) by weight of conventional additives and processing assistants.

Abstract: The invention is directed to a composition of matter useful as a paper impregnant, to the method of its use, and to the products produced by the method. Poly (diphenylmethane diisocyanate) or PMDI has been used in the past as a paper impregnant with or without propylene carbonate as a diluent. These products have generally required pressing under high pressures and at elevated temperatures. It has now been found that triacetin and/or triethyl citrate in usages up to about 20% of PMDI give superior performance in impregnated products. The modified PMDI will cure at essentially ambient conditions in times as short as 1-2 days to insoluble polyureas with low residual amounts of isocyanates and reaction byproducts such as 4,4'-diaminodiphenylmethane. The treated papers can be used in applications of which skins for sandwich panels and high strength corrugated board would be exemplary.

Abstract: A polyarylene sulfide resin composition is improved in mold releasing characteristics in molding, is thermally and chemically stable, evolves little decomposition gases and exhibits excellent mechanical characteristics. The composition can be prepared by blending (A) 100 parts by weight of a polyarylene sulfide resin with (B) 0.01 to 5 parts by weight of an ester compound composed of a polybasic aliphatic carboxylic acid and a monohydric aliphatic alcohol.

Abstract: The present invention relates to pulverulent water-swellable hydrophilic (co)polymers which comprise, for reducing dusting, auxiliaries from the series consisting of silicones and/or other auxiliaries, the latter in a total amount of less than 1% by weight, for example polyglycols or polyglycol ethers, the vapor pressure of the individual auxiliaries being not more than 0.1 mbar at 20.degree. C. and their melting point being not more than 100.degree. C., processes for their preparation and their use for absorption of water and aqueous solutions.

Abstract: A self-lubricating polymeric composition, characterized as a melt blend of a thermoplastic polymer and a lubricating system containing ultra high molecular weight polyethylenes, a polyester, acid metal salts, calcium salts, antioxidants and stabilizers. The composition may be prepared into shaped articles which exhibit improved surface wear resistance and coefficients of friction.

Abstract: The rate of absorption of polycaprolactone in absorbable coating and blends is increased by blending with a crystallization modifier. The absorbable blend is suitable for use in the coating of surgical sutures and in the controlled release of chemical or pharmaceutical agents.

Abstract: A thermoplastic molding composition having improved release properties is disclosed. The composition contains a polycarbonate resin and a mold release agent which is an ester conforming structurally to ##STR1## where R is a member selected from the group consisting of glyceryl, trimethylol propyl and pentaerythrityl radicals, m is 2 to 4, R' is a C.sub.8-20 hydrocarbon radical having a pendant alkyl group, and R" is the esterification residue of a C.sub.1-24 aliphatic or an aromatic carboxylic acid.

Abstract: The invention is directed to a composition of matter useful as a paper impregnant, to the method of its use, and to the products produced by the method. Poly (diphenylmethane diisocyanate) or PMDI has been used in the past as a paper impregnant with or without propylene carbonate as a diluent. These products have generally required pressing under high pressures and at elevated temperatures. It has now been found that triacetin and/or triethyl citrate in usages up to about 20% of PMDI give superior performance in impregnated products. The modified PMDI will cure at essentially ambient conditions in times as short as 1-2 days to insoluble polyureas with low residual amounts of isocyanates and reaction byproducts such as 4,4'-diaminodiphenylmethane. The treated papers can be used in applications of which skins for sandwich panels and high strength corrugated board would be exemplary.

Abstract: Liquid polyester plasticizers, having a hydroxyl value of at least 25, are incorporated into vinyl resins, such as PVC, which are formed into gaskets for use on appliances made from textured coil stock, especially refrigerators or freezers. These plasticizers have no detrimental effect on the relatively soft surface coatings on such appliances.

Abstract: Described are degradable thermoplastic compositions which are physically modified by citrate esters and other polycarboxylic acid esters. Also described are novel citrate esters effective to provide such physical modifications, as well as methods for preparing the degradable thermoplastic compositions.

Abstract: This invention relates to a bioresorbable material and an article of manufacture of such material for medical use comprising homopolymers, copolymers, or a blend thereof selected from the group of monomers including glycolic acid, lactic acid, caprolactone, trimethylene carbonate, paradioxanone and 1,5 dioxepan-2-one, a plasticizer selected from the group including ethyl, butyl and hexyl esters of acetylated or non-acetylated citric acid, ethyl terminated oligomers of lactic acid, having no less than 2 and no more than 10 units, and lactic acid esters of glycerol, the material comprises 50% of amorphous polymer or polymers to impart to the material plastic malleability substantially without memory.